Update dependency mysql:mysql-connector-java to v5.1.49

[dev-mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
mysql:mysql-connector-java	compile	patch	5.1.24 -> 5.1.49

By merging this PR, the issue #6 will be automatically resolved and closed:

Severity	CVSS Score	CVE	Reachability
Medium	5.4	CVE-2017-3586
Medium	5.0	CVE-2017-3523
Medium	5.0	CVE-2020-2934
Medium	4.7	CVE-2020-2875
Medium	4.5	CVE-2019-2692
Medium	4.0	CVE-2017-3589
Low	2.2	CVE-2020-2933

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